How many ways are there to line up 7 people (including Aang and Korra) if Aang and Korra must be together consecutibely?

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.6: Permutations And Combinations
Problem 5SC: In how many ways can 5 people stand in a line if one person demands to be first?
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How many ways are there to line up 7 people (including Aang and Korra) if Aang and Korra must be together consecutibely?

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The permutation is defined as the mathematical calculation of the number of ways a particular set can be arranged. In permutation order of the arrangement matters. Factorial is defined as the product of the number with every positive integer less than that. Let n be the number then the factorial of n is,

n!=1.2.3.......n-1.n.

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